RU124361U1 - DYNAMIC CONVECTION COOLING LED LUMINAIR - Google Patents

Abstract

The utility model relates to the field of lighting engineering, namely to lighting devices and / or light sources, using semiconductor devices - LEDs and can be used as an LED light source for street, industrial, residential and architectural design lighting.

The task to which the claimed technical solution is directed is to create a highly efficient lighting device that is easy to manufacture.

The technical results achieved by solving the task are to increase the efficiency devices increase the service life of the device; simplification of manufacturing.

The LED lamp with dynamic convection cooling, contains at least one hollow casing of heat-conducting material, on the outer surface of which is mounted an LED light source connected to a power source. The housing is a segment of a hollow pipe with open ends, and the LED light source, which is used as an LED module, is installed in close proximity to one of the open ends of the housing. In some cases, the implementation of the LED module can be mounted on the side surface of the housing. In some cases, the implementation of the LED module can be mounted on the end surface of the housing with the possibility of air entering the internal cavity of the housing. In various cases, the LED module can be mounted on the surface of the housing using a detachable or one-piece connection. Preferably, a layer of heat-conducting paste material is placed between the surfaces of the LED module and the housing. In some cases, the implementation of the LED lamp may contain n structurally interconnected hollow housings, where n≥2, each of which is a segment of a hollow pipe with open ends, in the immediate vicinity of one of which an LED module is installed. In various execution cases, the housings of two or more fixtures can be interconnected by means of a detachable or one-piece connection. In various applications, the housings of two or more luminaires can be connected between by means of a rigid or articulated connection. In some cases, the cases of two or more luminaires can be interconnected so that their longitudinal axes are parallel to each other. In other cases of execution, the housings of two or more luminaires can be interconnected in such a way that their longitudinal axes are located to each other at an angle comprising a range of 10 ° -170 °. In some cases, the execution of the housing of two or more fixtures are interconnected with the contact of adjacent surfaces. In some cases, the execution of the housing of two or more fixtures are interconnected with a gap between adjacent surfaces. In various cases, each of the cases may have a rectangular, or square, or round, or triangular, or figured profile. Preferably, the casing was made of an aluminum pipe of rectangular shape with external dimensions in width of 100.0 mm, in height of 30.0 mm, with a wall thickness of 2.0 mm. Preferably, the housing length is in the range of 0.2 m-0.5 m. It is preferred that the power of the LED module is in the range of 20-70 watts. Preferably, the LED lamp contains means of attachment to the supporting surfaces.

1 independent claim, 16 dependent claims, 8 of FIG. drawings.

Description

The utility model relates to the field of lighting engineering, namely to lighting devices and / or light sources, using semiconductor devices - LEDs.

The utility model can be used as an LED light source for street, industrial, domestic and architectural design lighting.

Definition of Terms

A light emitting diode (LED, light emitting diode) is a semiconductor device with an electron-hole transition, which generates optical radiation when an electric current is passed through it (http://rn.wikipedia.org/wiki/C LED).

An LED module is a printed circuit board with LEDs installed on it, and possibly electronic components and secondary optics (http://light.rtcs.ru/products/list.php?SECTION_ID=89). LED modules (clusters) are sealed blocks of high impact polystyrene with LEDs located inside. (http://nlt-trading.ru/catalog/index.php?SECTION_ID=4)

LED lighting devices are widely used due to their inherent advantages - high light output, low power consumption, long life, high safety, compactness and low weight, resistance to mechanical stress, light purity, directivity of radiation, etc. The main problem in industrial development LED lighting devices is the removal of heat generated by LEDs. When using powerful LEDs, for example, in the manufacture of street lamps, there is a danger of overheating of the LEDs during operation, which leads to a decrease in light output, service life, and reliability of the lamps.

A known LED lighting device is a lamp containing sections of LEDs connected to a power supply unit, which is connected to an alternating voltage power supply network, in which a lamp housing made of heat-conducting material is used as a cooling radiator, while LED sections are mounted on a cooling radiator. As a cooling radiator, a block of metal elements located both on the housing and inside the housing can be used, and to increase the dissipated thermal power of the LEDs, the cooling radiator can have forced cooling, for example, by means of a discharge fan (RF patent No. 2313199 for the invention “LAMP” ", IPC Н05В 33/02, F21S 4/00, published on December 20, 2007). A disadvantage of the known luminaire is the insufficiently efficient heat dissipation at increased heat loads, which leads to a reduction in the luminaire's service life.

A known lamp containing an LED light source, as well as a membrane electric fan placed in a housing in which nozzle openings are made, and a hollow radiator, the outer surface of which is equipped with cooling fins, the radiator and the fan casing are installed so that the intercostal spaces of the radiator form channels for air flows created by fans and exiting through the nozzle openings of its housing. The fan casing and the light source are located in the cavity of the radiator, and the luminaire contains a tubular casing that is mounted on top of the radiator and has through holes in its lower and upper parts (RF patent No. 111253 for the utility model “LAMP WITH ACTIVE COOLING”, IPC F21V 29 / 02, published on December 10, 2011).

A disadvantage of the known lamp is its structural complexity and lack of operational reliability.

Known for the closest combination of essential features to the claimed utility model and selected as a prototype is a LED lamp with convection cooling, containing a hollow body of heat-conducting material, on the outer surface of which there is an LED light source connected to a power source with a flexible cable. The optical lens that covers the LEDs has an annular shape, and the casing is a radiator and has vertical radiator grilles (RF patent No. 2433577 for the invention of “LED LIGHT WITH HIGH-EFFICIENT CONVECTION COOLING”, IPC Н05В 33/00, publ. 10.11.2011). The implementation of the outer side surface of the housing ribbed in the form of vertical ribs of gratings requires processing the outer surface of the workpiece body with a mill or a cutter, which makes the manufacturing process of the known lamp laborious. In addition, the lamp is not characterized by insufficiently high heat exchange efficiency of the internal volume of the hollow body with the environment.

The task, which is aimed by the claimed technical solution, is to create a simple to manufacture highly efficient lighting device

Technical results achieved by solving the task are:

- increase in efficiency devices

- increase the service life of the device;

- simplification of manufacture.

The indicated technical results are achieved in that the LED lamp with dynamic convection cooling contains at least one hollow body of heat-conducting material, on the outer surface of which an LED light source is connected, connected to a power source. The housing is a segment of a hollow pipe with open ends, and the LED light source, which is used as an LED module, is installed in close proximity to one of the open ends of the housing.

In some cases, the implementation of the LED module can be mounted on the side surface of the housing.

In some cases, the implementation of the LED module can be mounted on the end surface of the housing with the possibility of air entering the internal cavity of the housing.

In various cases, the LED module can be mounted on the surface of the housing using a detachable or one-piece connection.

Preferably, a layer of heat-conducting paste material is placed between the surfaces of the LED module and the housing.

In some cases, the implementation of the LED lamp may contain n structurally interconnected hollow housings, where n≥2, each of which is a segment of a hollow pipe with open ends, in the immediate vicinity of one of which an LED module is installed.

In various execution cases, the housings of two or more fixtures can be interconnected by means of a detachable or one-piece connection.

In various applications, the housings of two or more luminaires can be connected between by means of a rigid or articulated connection.

In some cases, the cases of two or more luminaires can be interconnected so that their longitudinal axes are parallel to each other.

In other cases of execution, the housings of two or more luminaires can be interconnected in such a way that their longitudinal axes are located to each other at an angle comprising a range of 10 ° -170 °.

In some cases, the execution of the housing of two or more fixtures are interconnected with the contact of adjacent surfaces.

In some cases, the execution of the housing of two or more fixtures are interconnected with a gap between adjacent surfaces.

In various cases, each of the cases may have a rectangular, or square, or round, or triangular, or figured profile.

Preferably, the casing was made of an aluminum pipe of rectangular shape with external dimensions in width of 100.0 mm, in height of 30.0 mm, with a wall thickness of 2.0 mm.

Preferably, the body length is in the range of 0.2 m to 0.5 m.

Preferably, the power of the LED module is in the range of 20-70 watts.

Preferably, the LED lamp contains means of attachment to the supporting surfaces.

A comparative analysis of the claimed utility model with the prototype showed that in all cases of execution, it differs from the well-known, closest technical solution:

- the execution of the body in the form of a segment of a hollow pipe with open ends;

- using an LED module as an LED light source;

- the implementation of the LED module installed in close proximity to one of the open ends of the housing.

In some cases, the performance of the utility model differs from the well-known, closest technical solution:

- the implementation of the LED module mounted on the side surface of the housing;

- the implementation of the LED module, mounted on the end surface of the housing with the possibility of air entering the internal cavity of the housing;

- the implementation of the LED module mounted on the surface of the housing using a detachable or one-piece connection;

- the presence of a layer of heat-conducting paste-like material between the surfaces of the LED module and the housing;

- the presence of n structurally interconnected hollow bodies, where n≥2;

- the execution of the buildings interconnected by means of a detachable or one-piece connection;

- the implementation of the buildings interconnected by means of a rigid or swivel;

- the implementation of the buildings interconnected in such a way that their longitudinal axes are parallel to each other;

- the execution of the buildings interconnected in such a way that them, that their longitudinal axes are located to each other at an angle making up the range of 10 ° -170 °;

- the implementation of the buildings, interconnected with the contact of adjacent surfaces;

- the execution of buildings interconnected with a gap between adjacent surfaces;

- the execution of the housing with a rectangular, or square, or round, or triangular, or curly profile;

- the execution of the housing from an aluminum pipe of a rectangular profile with external dimensions in width - 100.0 mm, in height - 30.0 mm, with a wall thickness of 2.0 mm;

- the implementation of the length of the housing, comprising a range of 0.2 m - 0.5 m;

- using an LED module with a power component in the range of 20-70 W;

- the presence of means of attachment to the supporting surfaces. The proposed design of the cooling device made it possible to improve thermophysical parameters by increasing the efficiency of convective heat transfer, which ensures that almost all the heat generated by the LEDs is removed from the LEDs and transferred to the surrounding space. This increases the light output of the LEDs and allows you to increase the life of their LEDs and, therefore, the lighting device. In addition, more intensive cooling, allows high currents to be supplied to the LED module, thereby increasing the efficiency and the power of the lighting device as a whole. The use of a hollow pipe as a housing does not require additional milling or other processing of the outer surface, which reduces costs and simplifies the manufacture of the product. The implementation of the lamp, containing the nth number of buildings, various options for their connection allow you to create lamps of various capacities and designs, expanding the functionality and applications. The execution of the body from a pipe of rectangular profile with external dimensions in width - 100.0 mm, in height - 30.0 mm, with a wall thickness of 2.0 mm allows the use of high-quality rolled billets, significantly reducing manufacturing costs. The implementation of the housing of aluminum, characterized by high thermal conductivity and heat transfer, provides efficient convection and efficient cooling of the LEDs. Tests have shown that with a case length of 0.2 m to 0.5 m, the most efficient cooling is provided. With a case length of less than 0.2 m, the air does not have time to cool, and with a case length of more than 0.5 m, the air draft between the inlet and outlet decreases.

The proposed utility model is illustrated by the circuit drawings shown in figures 1-8.

Figure 1 presents a schematic drawing of a LED lamp with dynamic convection cooling with a rectangular profile of the housing and mounted on the side surface of the housing LED module, side view.

Figure 2 presents a view A (front) of figure 1

Figure 3 presents a view of B (top) in figure 1

Figure 4 presents a schematic drawing of a LED lamp with dynamic convection cooling with a rectangular profile of the housing and mounted on the side surface of the housing LED module, with a partial cutaway, side view.

Figure 5 presents a schematic drawing of a LED lamp with dynamic convection cooling with a rectangular profile of the housing and mounted on the end surface of the housing LED module, General view.

Figure 6 presents a schematic drawing of a LED lamp with dynamic convection cooling with a round profile of the housing and mounted on the side surface of the housing LED module, General view.

Figure 7 presents the LED lamp with dynamic convection cooling, containing two interconnected housing with the placement of the longitudinal axes at an angle, General view.

On Fig presents a LED lamp with dynamic convection cooling, containing four interconnected with a gap of the housing with the parallel placement of the longitudinal axes, General view.

The LED lamp with dynamic convection cooling contains at least one hollow body (1) in the form of a segment of a hollow pipe of heat-conducting material with open ends (2), (3). On the outer surface of the housing (1) in close proximity to one of the open ends (2) or (3), an LED module (4) connected to a power source (not shown) is fixed, which is an LED light source. In various cases, the LED module (4) can be mounted on the side surface of the housing (1) (Figs. 1-4), or on the end surface of the housing (1) (Fig. 5) with the possibility of air entering the internal cavity of the housing, for example through the holes (5). The LED module (4) can be fixed to the surface of the housing (1) using a detachable connection, for example, bolts (6) or an integral connection, for example, rivets (7), or glue (not shown in the drawing), etc. Preferably, so that between the surfaces of the LED module (4) and the housing (1) was placed a layer of heat-conducting paste-like material (8) (figure 4). In various cases, the LED lamp may contain n (where n> 2) structurally interconnected hollow housings (1) _1, (1) ₂ ... (1) _i ... (1) _n , each of which (1) _i represents a segment of a hollow pipe with open ends (2) _i , (3) _i , in the immediate vicinity of one of which an LED module (4) _i is installed. The enclosures (1) ₂ ... (1) _i , .... {1) _n , can be interconnected by means of a detachable (6) _i or one-piece (7) _i connection. The housings can be connected between by means of a rigid (for example, by welding or connecting beam (9)), or hinged, for example, by means of link rods, connections (not shown). Cases (1) ₂ ... (1) _i , .... (1) _n , can be interconnected so that their longitudinal axis y are parallel (Fig. 9) or at an angle of 10 ° -170 ° (Fig. 8) each other; with the contact of adjacent surfaces (Fig.1-8) or with a gap λ between the latter (Fig.9). The cases can have a rectangular (Fig.1-6), or square (not shown in the drawing), or round (Fig.7), or triangular, or figured profile (not shown). The preferred embodiment of the housing (1) _{i is a} LED luminaire made of an aluminum pipe of rectangular shape with external dimensions in width d-100.0 mm, height h-30.0 mm, with wall thickness s 2.0 mm. The preferred length l of the housing (1) _i is in the range of 0.2 m - 0.5, and the power of the LED module (4) _i is in the range of 20-70 watts.

Preferably, the LED luminaire comprises means for attaching (10) to the supporting surfaces.

A utility model is manufactured and operates as follows. The LED module (4) _i, through a layer of heat-conducting paste-like material (8), is attached at one of the open ends of the pipe, for example, (2) _i through a detachable (6) _i or one-piece (7) _i connection. This end (2) _{i of the} pipe becomes the inlet for cold air. The opposite end (3) _{i of the} pipe becomes the outlet for heated air. Preferably, in the working position, the open end (2) _{i of the} pipe, in the immediate vicinity of which the LED module (4) _i is installed, is placed below the level of the opposite open end (3) _{i of the} pipe, providing a slightly inclined or vertical position of the lamp. When an electric current begins to flow through the LED module (4) _i , it heats up and transfers heat through the heat-conducting composition to the side surface of the housing (1) _i ,, and then to the air space of the internal cavity of the housing. As a result, in the internal cavity of the housing (1) _i , a difference is created in the temperature at the inlet (open end (2) _{i of the} housing (1) _i and the side surface of the housing (1) _i , which provides natural convection. Suction through the inlet (open end ( 2) _I ) cold air, passing through the air space of the internal cavity of the housing (1) _i heated by the LED module _, cools the LED module (4) _i and goes out heated through the outlet (3) _i .

Claims (17)

1. LED lamp with dynamic convection cooling, containing at least one hollow body of heat-conducting material, on the outer surface of which is fixed an LED light source connected to a power source, characterized in that the body is a section of a hollow pipe with open ends, and the LED light source, which is used as an LED module, is installed in close proximity to one of the open ends of the housing. 2. The LED lamp according to claim 1, characterized in that the LED module is mounted on the side surface of the housing. 3. The LED lamp according to claim 1, characterized in that the LED module is mounted on the end surface of the housing with the possibility of air entering the internal cavity of the housing. 4. The LED lamp according to claim 1, characterized in that the LED module is mounted on the surface of the housing using a detachable or one-piece connection. 5. The LED lamp according to claim 1, characterized in that between the surfaces of the LED module and the housing there is a layer of heat-conducting paste-like material. 6. LED lamp according to any one of paragraphs.1-5, characterized in that it contains n, where n≥2, structurally interconnected hollow bodies. 7. The LED lamp according to claim 6, characterized in that the housings are interconnected by means of a detachable or one-piece connection. 8. The LED lamp according to claim 6, characterized in that the housings are connected by means of a rigid or swivel connection. 9. The LED lamp according to claim 6, characterized in that the housings are interconnected so that their longitudinal axes are parallel to each other. 10. The LED lamp according to claim 7, characterized in that the housings are interconnected in such a way that their longitudinal axes are located to each other at an angle comprising a range of 10-170 °. 11. The LED lamp according to claim 7, characterized in that the housings are interconnected with the contact of adjacent surfaces. 12. The LED lamp according to claim 6, characterized in that the housings are interconnected with a gap between adjacent surfaces. 13. The LED lamp according to any one of claims 1 to 12, characterized in that each of the cases has a rectangular, or square, or round, or triangular, or figured profile. 14. The LED lamp according to any one of claims 1 to 12, characterized in that the housing is made of an aluminum pipe of rectangular shape with external dimensions in width of 100.0 mm, in height - 30.0 mm, with a wall thickness of 2.0 mm . 15. The LED lamp according to any one of claims 1 to 12, characterized in that the housing length is in the range of 0.2-0.5 m. 16. The LED lamp according to any one of claims 1 to 12, characterized in that the power of the LED module is in the range of 20-70 watts. 17. The LED lamp according to any one of claims 1 to 12, characterized in that it comprises means of attachment to the supporting surfaces.

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